Paint brush



April 20, N 1 CAMPBELL 2,078,193

PAINT BRUSH Filed Jan. 25, 1936 Patented Apr. 20, 1937 UNITED STATES PAINT BRUSH Neal J. Campbell, St.

Louis, Mo., assignor of thirty-three and one-third per cent to Trevor R. Milligan, St. Louis, Mo.

Application January 25, 1936, Serial No. 60,756

2 Claims.

My invention relates to paint brushes, and has for its object to facilitate the rapid manipulation of the brush when used for lining and similar fine Work, where 'the spread of the bristles and the application of the paint delivered thereby is required to be uniform and even along a straight line, as where two or more different colors are applied side by side to the same or adjacent surfaces and their meeting margins are required to be sharp and distinct. Work of this character requires a steady hand and careful work by a competent painter, and is a time-consuming job even where handled by a skilled and experienced operator with a plain brush. My invention is also designed to expedite the painting of window sash where it is desired to keep from getting paint on the glass. By my invention such work as aforesaid is made easier and quicker of performance and superior as to results, and does not require any especial skill or competency on the part of the operator, and to these ends my invention consists in the combination, with the usual form of paint brush, of an attachment in the nature of a guard or shield having the peculiarities of construction and co-operation with the brush fibres, substantially as hereinafter described and claimed.

My invention will be readily understood when considered in connection with the accompanying drawing, wherein Fig. 1 is a top plan view of a paint brush With my guard mounted thereon,

Fig. 2 is a side elevation thereof with the guard in retracted position,

Fig. 3 is a detail, cross-sectional view taken on the line 3-3 of Fig. 2, looking in the direction of the arrows, and

Fig. 4 is a perspective view of a paint brush with the guard surrounding the two sides of the paint brush when the brush is actually being employed in painting.

Referring to the drawing, A designates the head of the brush, generally formed of metal, B the handle secured in the head in any convenient manner, as by crimping or nailing, and C the bristles secured in or to the head, all as is usual and well known in the ordinary forms of flat paint and similar brushes.

I0 designates a guard, preferably of metal, which is pivotally mounted to the head A of the paint brush by the nails I I. The guard is normally held out of contact with the sides of the bristles C by a spring I2, which may be of any convenient form, but I have illustrated a simple, iat spring secured to the handle B by the screw 5 I3. The outer end I4 of this spring is bent downwardly away from the head A and contacts with the bottom I5 of the guard I I). 'I'he outer end of the spring I3 is bent as at I6, so that it may freely slide upon the bottom I5.

The sides Il of the guard I0 are slightly curved as at I8 to provide a sliding contact with the wood or metal against which it may press. The upper, forward edges of the guard I0 are bent or flared outwardly as at I9 to insure the bristles 15 C freely entering the guard I0 when said guard is lifted upwardly when the brush is being applied to the surface to be painted.

It will be noted that the bottom I5 of the guard I Il terminates at at its forward end. 20 'I'he purpose of this is to permit contact of a substantial portion of the painting surface of the bristles C with the surface being painted. The guard Il] prevents the spreading of the bristles C, and so the painting is held to a defined line. The sides I1 also prevent any contact of the bristles C, such as with the surfaceZl, as shown in Fig. 4.

'I'he manner of operating the brush is as follows: The spring I2 normally keeps the guard IU 30 away from the bristles C, as shown in Fig. 2. When the brush is to be dipped into the paint bucket, the operator presses the guard Ill downwardly and backwardly on the pivots or nails Il, and this permits the complete immersion of the bristles in the paint. If the guard is held in this out of contact position as just described, the brush can be used as an ordinary paint brush. When the bristles C are to be shielded by the guard Ill, said guard is returned to the position 40 shown in Fig. 2, and then the edges I8 contact the surface being painted when further downward pressure causes the bottom I5 of the guard I0 to press against the spring I2, and the bristles C enter between the sides I1, guided by the flared portions IB. This leaves a short portion of the free ends of the bristles C extending beyond 'the sides I'I of the guard I0, and the said bristles are covered at their sides by said guard. It will be understood that owing to the bottom I5 of the 50 guard Ill terminating at 2l the major portion of the bottom part of the bristles C is in contact with the surface being painted.

I claim:

1. The combination with a paint brush, of a guard pivotally secured to the handle of said brush and adapted to shield the sides of the bristles of said brush when the brush is in service applying paint and to be swung back out of contact with said bristles when the brush is to be dipped into the paint supply, a .spring between said handle and said guard to normally retain said guard out of contact with said bristles, and a bottom portion in said guard terminating sub- NEAL J. CAMPBEIL. 

